3-(Bromomethyl)-6-hydroxy-4-(trifluoromethoxy)pyridine-2-carboxaldehyde
5-(Bromomethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-(Bromomethyl)-5-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
4-(Bromomethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxaldehyde